diff --git a/doc/upgrade-1.1.1.txt b/doc/upgrade-1.1.1.txt
index 08a9626c..8e30c20f 100644
--- a/doc/upgrade-1.1.1.txt
+++ b/doc/upgrade-1.1.1.txt
@@ -93,7 +93,15 @@ II. The Upgrade Process
 	your tomcat/conf/server.xml file, there are no changes in this upgrade. 
 	For upgrades from V1.0 to V1.1.1, please see the upgrade-1.1.txt file.  
 	
-8. Start "Apache Tomcat" and log in to VIVO.
+8.  VIVO is a multithreaded web application that may require more threads than 
+    are permitted under your Linux installation's default configuration. Ensure 
+    that your installation can support the required number of threads by making 
+    the following edits to /etc/security/limits.conf:
+
+    apache    hard    nproc   400
+    tomcat6   hard    nproc   1500 
+
+9. Start "Apache Tomcat" and log in to VIVO.
 
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